Flipkart — Complaint regarding constant delivery date extension

I ordered a laptop on 21st June, initially It showed expected delivery date as 22nd June which then got extended to 25th june due to some "unforeseen circumstances" but still there was no update. I tried to contact customer service 5-6 times but all I got was repeated lame excuses "We are trying their best to provide your delivery within 24-48 hours" but still no proper response. They first asked me to wait till 28th June, now they are asking me to wait till 30th June.. Like is there any value of my time or not? I have been warned of deratification from the project for which I needed this laptop. I am just helpless and totally stressed out.